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Report No.
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Reclanation technique of radiation contaminated soil

Ishiyama, Shintaro; Mamitani, Masataka*; Kondo, Mitsunori*; Hiki, Akinori*

Contaminated soil washing test was implemented in Fukushima for the purpose of performance verification and set up of engineering database for construction of contaminated soil washing plant and the following results were obtained in this first field test. (1) Dispersion of the radioactive contaminated soil over 10,000 Bq/kg was enhanced in alkalized washing solution at base equilibrium point of pH=10.1$$sim$$10.5. (2) Remarkable washing performance was achieved under the combination of dispersion and high speed shearing washing conditions. (3) Remarkable well ordered structural refinement and cumulation of the contaminated soil particle groups with strong FP confinement were observed at the particle size of 0.5$$sim$$10 $$mu$$m after washing the contaminated soil particle grain size under 0.5 mm, and sieve classification technique can be applied for elective elimination of this soil particle groups.

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